초록 ▼

This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a

This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair. Also disclosed is the construction and configuration of a reverse cycle air cooled double effect generator absorption refrigeration system for use with the sodium thiocyanate/ammonia refrigeration pair, as well as subcompositions, subsystems and components that improve the system efficiency and reduce cost.

대표청구항 ▼

An absorption refrigeration and/or heating system in connection with a primary source of heat, a cooling or heating load, and a heat sink or secondary source, and an external source of mechanical energy to selectively provide heat to or remove heat from the load comprising: (a) a multiple effect gen

An absorption refrigeration and/or heating system in connection with a primary source of heat, a cooling or heating load, and a heat sink or secondary source, and an external source of mechanical energy to selectively provide heat to or remove heat from the load comprising: (a) a multiple effect generator means to apply the primary source of heat to an absorption solution pair comprising a highly volatile refrigerant, and an absorbent, and to desorb refrigerant from the pair; (b) first and second heat exchanger means, one of which is in heat exchange relationship with the heat sink or secondary source, and the other of which is in heat exchange relationship with the load, (c) valve means to selectively switch and reverse the functions of the first and second heat exchangers, from condenser to evaporator, in the cooling or heating mode and vice versa; (d) an absorber means selectively connectable to the first or second heat exchanger when the heat exchanger is functioning as the evaporator; (e) a pump means connected between the absorber means and the generator means to transfer solution flow to the generator means at higher pressure; (f) the generator means comprising a plurality of coiled tubes with the coils juxtaposed one to the next in a generally annular composite form with a generator means surrounding the source of heat; (g) the pump means having connection means to mechanically convert pressure energy in the refrigerant and/or solution pair to mechanical energy, and means to add the converted mechanical energy to the mechanical energy externally supplied to the system; and (h) means to defrost the system by a procedure of switching the refrigerant from the second heat exchanger to the first heat exchanger, interrupting or minimizing contact between the secondary heat source and the first heat exchanger, and interrupting contact between the load and the second heat exchanger, and reversing the defrosting procedure when the system is defrosted.